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Merge pull request #38 from meshula/main
add the metal example
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| //======================================================================== | ||
| // Simple RGFW+Metal example | ||
| // | ||
| // | ||
| // made using a modifed version of the GLFW+metal example | ||
| // https://github.com/glfw/glfw/blob/metal-guide/examples/metal.m | ||
| // | ||
| // Copyright (c) Camilla Berglund <[email protected]> | ||
| // | ||
| // This software is provided 'as-is', without any express or implied | ||
| // warranty. In no event will the authors be held liable for any damages | ||
| // arising from the use of this software. | ||
| // | ||
| // Permission is granted to anyone to use this software for any purpose, | ||
| // including commercial applications, and to alter it and redistribute it | ||
| // freely, subject to the following restrictions: | ||
| // | ||
| // 1. The origin of this software must not be misrepresented; you must not | ||
| // claim that you wrote the original software. If you use this software | ||
| // in a product, an acknowledgment in the product documentation would | ||
| // be appreciated but is not required. | ||
| // | ||
| // 2. Altered source versions must be plainly marked as such, and must not | ||
| // be misrepresented as being the original software. | ||
| // | ||
| // 3. This notice may not be removed or altered from any source | ||
| // distribution. | ||
| // | ||
| //======================================================================== | ||
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| /* RGFW will have to be linked/compiled outside of this file | ||
| because this file uses objective-c and RGFW uses work arounds | ||
| */ | ||
| //#define RGFW_IMPLEMENTATION | ||
| #define RGFW_NO_API | ||
| #define RGFWDEF | ||
| #import "RGFW.h" | ||
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| #import <Metal/Metal.h> | ||
| #import <QuartzCore/QuartzCore.h> | ||
| #import <simd/simd.h> | ||
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| #include <assert.h> | ||
| #include <stdlib.h> | ||
| #include <stdio.h> | ||
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| int main(void) | ||
| { | ||
| id<MTLDevice> device = MTLCreateSystemDefaultDevice(); | ||
| if (!device) | ||
| exit(EXIT_FAILURE); | ||
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| RGFW_window* window = RGFW_createWindow("RGFW Metal example", RGFW_RECT(0, 0, 640, 480), RGFW_CENTER); | ||
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| CAMetalLayer* layer = [CAMetalLayer layer]; | ||
| layer.device = device; | ||
| layer.pixelFormat = MTLPixelFormatBGRA8Unorm; | ||
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| NSView* view = (NSView*)window->src.view; | ||
| [view setLayer: layer]; | ||
| // [view setWantsLayer: YES]; (I think RGFW already sets this) | ||
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| MTLCompileOptions* compileOptions = [MTLCompileOptions new]; | ||
| compileOptions.languageVersion = MTLLanguageVersion1_1; | ||
| NSError* compileError; | ||
| id<MTLLibrary> lib = [device newLibraryWithSource: | ||
| @"#include <metal_stdlib>\n" | ||
| "using namespace metal;\n" | ||
| "vertex float4 v_simple(\n" | ||
| " constant float4* in [[buffer(0)]],\n" | ||
| " uint vid [[vertex_id]])\n" | ||
| "{\n" | ||
| " return in[vid];\n" | ||
| "}\n" | ||
| "fragment float4 f_simple(\n" | ||
| " float4 in [[stage_in]])\n" | ||
| "{\n" | ||
| " return float4(1, 0, 0, 1);\n" | ||
| "}\n" | ||
| options:compileOptions error:&compileError]; | ||
| if (!lib) | ||
| { | ||
| NSLog(@"can't create library: %@", compileError); | ||
| exit(EXIT_FAILURE); | ||
| } | ||
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| id<MTLFunction> vs = [lib newFunctionWithName:@"v_simple"]; | ||
| assert(vs); | ||
| id<MTLFunction> fs = [lib newFunctionWithName:@"f_simple"]; | ||
| assert(fs); | ||
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| id<MTLCommandQueue> cq = [device newCommandQueue]; | ||
| assert(cq); | ||
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| MTLRenderPipelineDescriptor* rpd = [MTLRenderPipelineDescriptor new]; | ||
| rpd.vertexFunction = vs; | ||
| rpd.fragmentFunction = fs; | ||
| rpd.colorAttachments[0].pixelFormat = layer.pixelFormat; | ||
| id<MTLRenderPipelineState> rps = [device newRenderPipelineStateWithDescriptor:rpd error:NULL]; | ||
| assert(rps); | ||
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| while (!RGFW_window_shouldClose(window)) { | ||
| while (RGFW_window_checkEvent(window) != NULL) { | ||
| if (window->event.type == RGFW_quit) | ||
| break; | ||
| } | ||
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| float ratio; | ||
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| ratio = window->r.w / (float) window->r.h; | ||
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| layer.drawableSize = CGSizeMake(window->r.w, window->r.h); | ||
| id<CAMetalDrawable> drawable = [layer nextDrawable]; | ||
| assert(drawable); | ||
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| id<MTLCommandBuffer> cb = [cq commandBuffer]; | ||
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| MTLRenderPassDescriptor* rpd = [MTLRenderPassDescriptor new]; | ||
| MTLRenderPassColorAttachmentDescriptor* cd = rpd.colorAttachments[0]; | ||
| cd.texture = drawable.texture; | ||
| cd.loadAction = MTLLoadActionClear; | ||
| cd.clearColor = MTLClearColorMake(1.0, 1.0, 1.0, 1.0); | ||
| cd.storeAction = MTLStoreActionStore; | ||
| id<MTLRenderCommandEncoder> rce = [cb renderCommandEncoderWithDescriptor:rpd]; | ||
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| [rce setRenderPipelineState:rps]; | ||
| [rce setVertexBytes:(vector_float4[]){ | ||
| { 0, 0, 0, 1 }, | ||
| { -1, 1, 0, 1 }, | ||
| { 1, 1, 0, 1 }, | ||
| } length:3 * sizeof(vector_float4) atIndex:0]; | ||
| [rce drawPrimitives:MTLPrimitiveTypeTriangle vertexStart:0 vertexCount:3]; | ||
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| [rce endEncoding]; | ||
| [cb presentDrawable:drawable]; | ||
| [cb commit]; | ||
| } | ||
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| RGFW_window_close(window); | ||
| } | ||
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